Antique Style Alexandrite Ring 10.09 Ct., 18K Yellow Gold

This ring centers a GIA certified, 10.09 carat cushion shaped alexandrite, presenting a pronounced color change from bluish green in daylight to pink purple under incandescent light, origin Russia, dimensions 13.53 x 10.88 x 7.73 millimeters. The gem is fashioned in a mixed brilliant cut, combining a brilliant facet structure on the crown with a modified step and brilliant arrangement in the pavilion, a configuration selected to maximize both light return and the stone s alexandrite effect. The cushion outline retains softened corners that broaden the table and permit a larger visual face up area, while the mixed brilliant pavilion facets create deep color saturation through selective internal reflections. Clarity is evaluated as eye clean at standard viewing distance, indicating that no inclusions interfere with the visual color change or facet performance. The polish is graded excellent, ensuring minimal surface diffusion of light across crown facets which preserves crisp facet junctions and accelerates the perceptual color shift when illumination is altered. There is no thermal or clarity enhancement, and the gem remains in its natural state as confirmed by GIA, a critical attribute for collectors and connoisseurs seeking provenance and treatment free material.

Surrounding the alexandrite is a precisely graded halo of white natural diamonds executed to provide optical contrast and to reinforce center gem saturation. The pear shaped white diamonds weigh approximately 1.00 carats, with color grade E and clarity in the Very Slightly Included range, VS1 and VS2. The round brilliant white diamonds total approximately 2.20 carats, also color grade E and clarity VS1 and VS2. All accent stones are calibrated and hand set in discrete prong settings to achieve a scalloped profile that follows the cushion silhouette, and the alternating pear and round forms create controlled light dispersion into the girdle plane of the alexandrite. The use of E color diamonds in VS clarity ensures minimal color body in the melee and high scintillation, which functions as a neutral, high intensity surround that amplifies the perceived hue separation of the alexandrite without introducing unwanted warmth or gray masking. Each accent diamond is set with consistent crown height and crown angle alignment to maintain uniform refraction and to avoid windowing or misaligned flash that could dilute the center stone s color presence.

The mounting is executed in solid 18K yellow gold, chosen to complement the warm undertones of the change to pink purple while simultaneously providing a strong visual counterpoint to the green phase, increasing overall color dynamics. The setting employs highly polished, tapered prongs and a structural gallery that is purposefully open beneath the pavilion to permit maximum light ingress and to facilitate the color change phenomenon from varying lighting angles. The band is finished with a hand polished comfort contour, and the junctions between head and shank are reinforced with internal soldering and careful filing to preserve long term integrity while maintaining a refined silhouette. All metalwork is finished to a high luster to avoid microabrasion near the stones which can scatter light and diminish brilliance. The piece is presented by The Natural Gemstone Company with full GIA documentation for the alexandrite and detailed diamond grading summaries, and we welcome technical inquiries regarding facet diagrams, exact diamond counts and certification copies, as well as requests for in person viewing under controlled daylight and incandescent conditions to personally observe the characteristic alexandrite effect.